The adj pregnant has 3 senses (first 2 from tagged texts)
1. (3) pregnant -- (carrying developing offspring within the body or being about to produce new life)
2. (1) meaning, pregnant, significant -- (rich in significance or implication; "a meaning look"; "pregnant with meaning")
3. fraught, pregnant -- (filled with or attended with; "words fraught with meaning"; "an incident fraught with danger"; "a silence pregnant with suspense")